Carney says she hit the wrong button. When she frantically asked to be allowed to change it, House Speaker Thom Tillis, a Republican, said the rules didn't allow it and he wasn't going to waive the rule for her.

The 10-year veteran of the legislature said she simply blew it.

“I take full responsibility for my vote,” she tells the News & Observer. “I made a mistake.”

There was no such drama in two other veto override votes last night, but the outcome was the same. Republican legislators aided by a handful of Democrats successfully overrode Perdue's vetoes of the state budget and the Racial Justice Act. All three laws take effect immediately.